image overlap message for exposure 2 of trigger 911609
uvot_overlap.pl vrs. 2010-12-20b fem started at 190627d18h13m52s365803usUT
The observation of trigger 911609 started 2019-06-27T12:14:46.8
Examining file ./911609_g3374_uvot_sky_image.fits
The exposure ID is 583330486
The exposure time is 149.813 (seconds)
The filter is WHITE.
The uvot region is centered at (244.7803,-5.3689) with a roll angle of 304.1
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (244.8300,-5.2920) with a radius of 3.000 arc min
This is 5.487 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 0.00 sq. arc min or 0.00 of the BAT error circle
The XRT error circle is centered at (244.8280,-5.2890) with a radius of 0.028 arc min
This is 5.577 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 911609
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190627d18h13m59s924601usUT
Observation start time is 2019-06-27T12:14:46.8
Examining file ./911609_g3374_uvot_catalog_image.fits
The exposure ID is 583330486
The exposure is 149.813 sec.
The bin size is 2 pixels
The filter is WHITE
There are 11 detected source(s) for 911609_g3374
Aspect correction adds -0.00078 degrees (-0.187 sec of time = -2.79 arc sec) to RA
Aspect correction adds 0.00122 degrees ( 4.38 arcsec) to Dec
Total aspect correction is 5.20 arcsec
Star catalogs centered at 244.7832 , -5.3625 with radius 2.28 arc min.
n_usno: 72 n_gsc: 0
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 11 matched entries is 0.430" for 911609_g3374
Mean and std. dev of mag. difference (MAG_DELTA) are 0.896 and 0.392 for 911609_g3374
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 911609_g3374.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
Magnitude criteria will be applied later.
BAT distances are from RA=244.8300 (16:19:19.20) DEC=-5.2920 (-05:17:31.2)
XRT distances are from RA=244.8280 (16:19:18.72) DEC=-5.2890 (-05:17:20.4)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 91618.695 counts in the bkg source region of 6166.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 14.859 counts/pixel (5-sig UL in 4" is 19.88 mag) for 911609_g3374
Do not compute counts in XRT region because position is too far from center.
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.44, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 911609_583330486_190627d18h13m59s924601usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(244.7803,-5.3689,45")
fk5;-circle(244.773480539576,-5.3653530484436,6")
fk5;-circle(244.768128006501,-5.3637588706399,6")
fk5;-circle(244.776378431916,-5.35532082742237,6")
image paragraph message for exposure 2 of trigger 911609
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB190627 (Swift/BAT trigger 911609) at 11:18:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3352 seconds after the BAT trigger. No credible afterglow candidate
has been found in the initial data products. The 2.7'x2.7' sub-image covers
none of the XRT error circle. The 8'x8' region for the list of sources
generated on-board covers none of the XRT error circle. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.18.
------- notes for trigger 911609 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190627d18h14m03s251131usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=911609
-expid=583330486 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/911609/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 583330486.79918 or about 2019:178:12:14:41 UT
Found 545 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 55 sources in
srclist catalog. Found 12 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 11 source(s) in Genie image catalog. Found 0 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.44 mag. Found 68 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
9% of the Genie image region. The XRT position was OUTSIDE the star catalog
search region.
Genie image analysis:
Found 91618.7 counts in the large background region of 6166.0 pixels or a rate
of 14.859 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.89 mag. for a
4-arcsec aperture. The closest srclist source has ra= 244.8036 dec= -5.3034
mag=18.52 sep=101.76". The closest Genie source has ra= 244.7889 dec= -5.3480
mag=18.44 sep=254.48".
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
583330486 3351 WHITE srclist found no candidates.
583330486 3351 WHITE image found no candidates.
List afterglow candidates for other finding charts.
583327248 113 ? srclist data are not available.
583327248 113 WHITE image found no candidates.
------- Tokens for Quick GCN -------